Testable signatures of quantum nonlocality in a two-dimensional chiral p-wave superconductor

Sumanta Tewari; Chuanwei Zhang; S. Das Sarma; Chetan Nayak; Dung Hai Lee

doi:10.1103/PhysRevLett.100.027001

Testable signatures of quantum nonlocality in a two-dimensional chiral p-wave superconductor

Sumanta Tewari
, Chuanwei Zhang
, S. Das Sarma
, Chetan Nayak
, Dung Hai Lee

Department of Physics

Research output: Contribution to journal › Article › peer-review

92 Scopus citations

Abstract

A class of topological excitationsâ"the odd-winding number vorticesâ"in a spinless 2D chiral p-wave (px+ipy) superconductor traps Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy fermionic eigenstates are intrinsically nonlocal. We predict two testable signatures of this unusual quantum nonlocality in quasiparticle tunneling experiments. We discuss why the associated teleportationlike phenomenon does not imply the violation of causality.

Original language	English
Article number	027001
Journal	Physical Review Letters
Volume	100
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.100.027001
State	Published - Jan 17 2008

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10.1103/PhysRevLett.100.027001

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abstract = "A class of topological excitations{\^a}{"}the odd-winding number vortices{\^a}{"}in a spinless 2D chiral p-wave (px+ipy) superconductor traps Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy fermionic eigenstates are intrinsically nonlocal. We predict two testable signatures of this unusual quantum nonlocality in quasiparticle tunneling experiments. We discuss why the associated teleportationlike phenomenon does not imply the violation of causality.",

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AU - Lee, Dung Hai

PY - 2008/1/17

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N2 - A class of topological excitationsâ"the odd-winding number vorticesâ"in a spinless 2D chiral p-wave (px+ipy) superconductor traps Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy fermionic eigenstates are intrinsically nonlocal. We predict two testable signatures of this unusual quantum nonlocality in quasiparticle tunneling experiments. We discuss why the associated teleportationlike phenomenon does not imply the violation of causality.

AB - A class of topological excitationsâ"the odd-winding number vorticesâ"in a spinless 2D chiral p-wave (px+ipy) superconductor traps Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy fermionic eigenstates are intrinsically nonlocal. We predict two testable signatures of this unusual quantum nonlocality in quasiparticle tunneling experiments. We discuss why the associated teleportationlike phenomenon does not imply the violation of causality.

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Testable signatures of quantum nonlocality in a two-dimensional chiral p-wave superconductor

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